19858635

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{509}}^1$

素因数の和:557

約数の個数: 48

約数和(自身を含む): 37576800

約数和(自身を除く): 17718165

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 289, 459, 509, 765, 867, 1445, 1527, 2295, 2545, 2601, 4335, 4581, 7635, 7803, 8653, 13005, 13743, 22905, 25959, 39015, 43265, 68715, 77877, 129795, 147101, 233631, 389385, 441303, 735505, 1168155, 1323909, 2206515, 3971727, 6619545, 19858635]

約数ペア:

[(1, 19858635), (3, 6619545), (5, 3971727), (9, 2206515), (15, 1323909), (17, 1168155), (27, 735505), (45, 441303), (51, 389385), (85, 233631), (135, 147101), (153, 129795), (255, 77877), (289, 68715), (459, 43265), (509, 39015), (765, 25959), (867, 22905), (1445, 13743), (1527, 13005), (2295, 8653), (2545, 7803), (2601, 7635), (4335, 4581)]